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| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2010-09-04 02:02:14 +0000 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2010-09-04 02:02:14 +0000 |
| commit | c800c0d25f70e445ff4f17bf720ae5d2f942e695 (patch) | |
| tree | 6ddd8d88e847a3affbe6114437051bc4ee1f824c /lib | |
| parent | bbfc31012bad41d1eda6d65c0081760e8fdbc323 (diff) | |
Emit target specific nodes to handle splats starting at zero indicies
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113055 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 95dbb61766..f7b8100f70 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -5470,10 +5470,17 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const { // FIXME: pshufb, blends, shifts. if (VT.getVectorNumElements() == 2 || - ShuffleVectorSDNode::isSplatMask(&M[0], VT) || isPALIGNRMask(M, VT, Subtarget->hasSSSE3())) return Op; + if (ShuffleVectorSDNode::isSplatMask(&M[0], VT) && + SVOp->getSplatIndex() == 0 && V2IsUndef) { + if (VT == MVT::v2f64) + return getTargetShuffleNode(X86ISD::UNPCKLPD, dl, VT, V1, V1, DAG); + if (VT == MVT::v2i64) + return getTargetShuffleNode(X86ISD::PUNPCKLQDQ, dl, VT, V1, V1, DAG); + } + if (isPSHUFHWMask(M, VT)) return getTargetShuffleNode(X86ISD::PSHUFHW, dl, VT, V1, X86::getShufflePSHUFHWImmediate(SVOp), |